/**
 * @summary 键盘键值
 * @name uiCore#keyCode
 * @type {{TAB: number, ENTER: number, ESCAPE: number, SPACE: number, LEFT: number, UP: number, RIGHT: number, DOWN: number}}
 */
(function ($) {
    $.keyCode = {
        TAB: 9,
        ENTER: 13,
        ESCAPE: 27,
        SPACE: 32,
        LEFT: 37,
        UP: 38,
        RIGHT: 39,
        DOWN: 40
    };
})(jQuery);
